特異性：This item recognizes glucose transporter 4 (GLUT4). It does not react with HEP G2 type glucose transporter in human erythrocytes, rat brain or other tissues that do not exhibit sensitivity to insulin.GLUT4 is the insulin-regulated glucose transporter found in adipose tissue and striated muscle, responsible for glucose disposal. The stimulation of glucose uptake by insulin requires translocation of the GLUT4 glucose transporter from intracellular storage sites to the cell surface. Activation of phosphatidylinositol-3-OH kinase (PI3K) is required for this trafficking event, but it is not sufficient to produce GLUT4 translocation. Human insulin resistance involves a defect in GLUT4 traffic and targeting leading to accumulation in a dense membrane compartment from which insulin is unable to recruit GLUT4 to the cell surface.
